JPS63117550A - Current supplying system - Google Patents
Current supplying systemInfo
- Publication number
- JPS63117550A JPS63117550A JP61264287A JP26428786A JPS63117550A JP S63117550 A JPS63117550 A JP S63117550A JP 61264287 A JP61264287 A JP 61264287A JP 26428786 A JP26428786 A JP 26428786A JP S63117550 A JPS63117550 A JP S63117550A
- Authority
- JP
- Japan
- Prior art keywords
- negative power
- subscriber
- subscribers
- power source
- line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract 2
- 238000004891 communication Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 6
- 230000020169 heat generation Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 241000723353 Chrysanthemum Species 0.000 description 1
- 235000007516 Chrysanthemum Nutrition 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は通話電流供給方式、特に長距離加入者回線なら
びに短距離加入者回線を必要とする多数の加入者を収容
する電子交換機の通話電流供給方式に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a communication current supply system, particularly to communication current supply systems for electronic exchanges accommodating a large number of subscribers requiring long-distance subscriber lines as well as short-distance subscriber lines. Regarding the supply method.
従来、この種の通話電流供給方式においては、電力消費
、発熱量の増大を避けるために長距離加入者回線用に２
Ｅの電圧、例えば−４８Ｖの第１の負電源と、短距離加
入者回線用にＥの電圧、即ち一２４Ｖの第２の負電源と
を備えて、それぞれの通話電流供給回路を介してそれぞ
れの加入者に通話電流を供給する方法がとられている。Conventionally, in this type of call current supply system, two channels were used for long-distance subscriber lines to avoid increases in power consumption and heat generation.
a first negative power supply with a voltage of E, e.g. -48V, and a second negative power supply with a voltage of E, e.g. A method has been adopted in which communication current is supplied to all subscribers.
この場合、一般に第１の負電源と第２の負電源との電流
容量は、交換機設置時に遠距離の加入者数と近距離の加
入者数とそのトラヒツクを見込んで設定されている。In this case, the current capacities of the first negative power supply and the second negative power supply are generally set in consideration of the number of long-distance subscribers, the number of short-distance subscribers, and their traffic when installing the exchange.
しかしながら、予測と異なって近距離の加入者が増えて
、−２４Ｖの第２の負′Ｉ！源に余裕がなくなっても、
−４８Ｖの第１の負電源に余裕かめるときは、この電源
から通話電流を供給できるが、交換機内の発熱量が大き
くな夛冷却に工夫を要するとか、一定数以上に近距離の
加入者を増やせないと云う問題点がある。However, unlike the prediction, the number of near-field subscribers increases, and the second negative 'I! of -24V! Even if you run out of resources,
If there is enough power in the -48V first negative power supply, it is possible to supply communication current from this power supply, but if the exchange generates a large amount of heat and requires special cooling, or if more than a certain number of subscribers are nearby, The problem is that it cannot be increased.
本発明の目的は上述の問題点を除去し、第１の負電源と
第２の負電源との差電圧を利用して、近距離の加入者の
増設ができる電子交換機を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned problems and to provide an electronic exchange that can increase the number of subscribers in a short distance by using the voltage difference between a first negative power source and a second negative power source. .
本発明の通話電流供給方式は、２Ｅの電圧を有する長距
離加入者回線用の第１の負電源と、Ｅの電圧を有する短
距離加入者回線用の第２の負電源とを備える電子交換機
において、前記第１の負電源の負側端子を加入者線のリ
ング線（Ａ線）に接続し、前記第２の負電源の負側端子
を加入者線のチップ線（Ｂ線）に接続して通話電流を供
給することによシ構成される。The communication current supply system of the present invention provides an electronic exchange equipped with a first negative power supply for long-distance subscriber lines having a voltage of 2E and a second negative power supply for short-distance subscriber lines having a voltage of E. , the negative terminal of the first negative power supply is connected to the ring wire (line A) of the subscriber line, and the negative terminal of the second negative power supply is connected to the tip line (line B) of the subscriber line. The device is constructed by supplying a communication current.
以上の構成によシ、第１の負電源にその電流容量の最大
までの遺臣Ｓまたは近距離の加入者を、交換機内での余
分の発熱を伴なうことなく任意の比率で接続することが
でき、更に第２の負電源に近距離の加入者を上記で接続
した近距離の加入者と同数接続することができる。With the above configuration, it is possible to connect to the first negative power source S or short-distance subscribers up to the maximum current capacity of the first negative power source at any ratio without causing excess heat generation within the exchange. Furthermore, it is possible to connect the same number of short-range subscribers to the second negative power supply as the above-mentioned short-range subscribers.
以下、本発明の実施例について図面を参照して説明する
。Embodiments of the present invention will be described below with reference to the drawings.
第１図は本発明の一実施例のブロック図で、従来の通話
電流供給方式と併せて図示されている。FIG. 1 is a block diagram of an embodiment of the present invention, and is illustrated together with a conventional communication current supply system.
図において、交換機には遠距離の加入者への通話電流供
給のための負電源Ｅ１（−４８Ｖ）と、近距離の加入者
への通話電流供給のための負電源Ｅ２（−２４Ｖ ）と
が設けられて、遠距離の加入者の電話機Ｔ１は加入者回
路１を介して負電源Ｅｌに接続され、近距離の加入者の
電話機Ｔ２は加入者回路２を介して負電源Ｅ２に接続さ
れている他、−部の近距離の加入者の電話機Ｔ３のチッ
プ線およびリング線は、加入者回路３を介して、それぞ
れ負電源Ｅ１の負側端子および負電源Ｅ２の負側端子に
接続されている。また加入者回路１．２および３は何れ
も、チップ線とリング線とにそれぞれ電流制限と電流検
出とのだめの抵抗Ｒ１およびＲ２が設けられ、抵抗凡１
およびＲ２の両端は電流検出回路に接続され、さらに加
入者線と接続されたチップ線およびリング線は通話回路
へ導かれている構成となっている。なお加入者回路１．
２および３のそれぞれに用いられる電流検出回路はその
回路構成にもよるが、例えばフォトカヴプラを用いたも
のでは抵抗等の常数値の違いのみで、全く同形式のもの
が使用される。In the figure, the exchange has a negative power supply E1 (-48V) for supplying communication current to long-distance subscribers, and a negative power supply E2 (-24V) for supplying communication current to short-distance subscribers. The telephone T1 of the distant subscriber is connected to the negative power supply El through the subscriber circuit 1, and the telephone T2 of the short distance subscriber is connected to the negative power supply E2 through the subscriber circuit 2. In addition, the tip line and ring line of the subscriber's telephone T3 at the short distance in the - section are connected to the negative side terminal of the negative power source E1 and the negative side terminal of the negative power source E2 via the subscriber circuit 3, respectively. There is. Further, both subscriber circuits 1.2 and 3 are provided with resistors R1 and R2 for current limiting and current detection in the tip line and the ring line, respectively.
Both ends of R2 and R2 are connected to a current detection circuit, and the tip line and ring line connected to the subscriber line are led to the communication circuit. Note that subscriber circuit 1.
The current detection circuits used in 2 and 3 each depend on their circuit configurations, but for example, in the case of a photocave plastic, the only difference is constant values such as resistance, and they are of exactly the same type.
第２図は第１図の通話電流構成図で、電話機の通話電流
の平均値をＩＴとし、交換機に設置された長距離加入者
回線用の負電源Ｅ１の電流容量が、この見込み加入者数
ｍからｍ Ｘ Ｉ Ｔで、短距離加入者回線用の負電源
Ｅ２の電流容量が見込み加入者数ｎからｎＸＩＴである
場合を示している。第２図によれば電話機Ｔ１の実際の
加入者数がｍ−αであれば、電話機Ｔ２および電話機Ｔ
３の加入者数はそれぞれｎ＋αおよびαまで、電源の電
流容量内で、しかも特別に大きな発熱を伴なうことなく
設けることがでさることを示している。即ち電話機Ｔ２
も電話機Ｔ３も共に短距離のものであるので、遠距離の
加入者数が見込みよシαだけ少なければ、通話電流供給
については近距離の加入者数を２αだけ増すことができ
る。Figure 2 is a diagram of the communication current configuration shown in Figure 1, where IT is the average value of the telephone communication current, and the current capacity of the negative power supply E1 for long-distance subscriber lines installed in the exchange is the expected number of subscribers. The case is shown in which the current capacity of the negative power supply E2 for short-distance subscriber lines is from n to nXIT, the expected number of subscribers, from m to m X I T . According to FIG. 2, if the actual number of subscribers of telephone T1 is m-α, then telephone T2 and telephone T
The number of subscribers of 3 indicates that it is possible to provide up to n+α and α, respectively, within the current capacity of the power supply and without causing particularly large heat generation. That is, telephone T2
Since both telephone T3 and T3 are short-distance subscribers, if the number of long-distance subscribers is less than expected by α, the number of short-distance subscribers can be increased by 2α in terms of communication current supply.
以上詳細に説明したように、本発明によれば２Ｅの電圧
を有する長距離加入者回線用の第１の負電源と、Ｅの電
圧を有する短距離加入者回線用の第２の負電源とを備え
る電子交換機において、第１の負電源に余裕があるとき
は、交換機内の発熱を考慮することなく、少なくともこ
の余裕加入者数の近距離の加入者を収容できると云う効
果がるる。As explained in detail above, according to the present invention, a first negative power supply for long-distance subscriber lines having a voltage of 2E and a second negative power supply for short-distance subscriber lines having a voltage of E are provided. In an electronic exchange equipped with this, when there is a surplus in the first negative power supply, it is possible to accommodate at least this surplus number of short-distance subscribers without considering heat generation within the exchange.
４、発明の詳細な説明
第１図は本発明の一実施例のブロック図、第２図は第１
図の電流構成図である。4. Detailed Description of the Invention Figure 1 is a block diagram of an embodiment of the invention, and Figure 2 is a block diagram of an embodiment of the invention.
It is a current configuration diagram of the figure.
１．２．３・・・・・・加入者回路、Ｅ１１Ｅ２・・・
・・・負電源、１％！、Ｒ２・・・・・・抵抗、’ｒ１
１ ’ｒ２− Ｔ３・・・・・・電話機。1.2.3...Subscriber circuit, E11E2...
...Negative power supply, 1%! , R2...Resistance, 'r1
1'r2-T3...Telephone.
菊 ２ 図Chrysanthemum 2 diagram
Claims (1)
と、Ｅの電圧を有する短距離加入者回線用の第２の負電
源とを備える電子交換機において、前記第１の負電源の
負側端子を加入者線のリング線（Ａ線）に接続し、前記
第２の負電源の負側端子を加入者線のチップ線（Ｂ線）
に接続して通話電流を供給することを特徴とする通話電
源供給方式。In an electronic exchange comprising a first negative power supply for long-distance subscriber lines with a voltage of 2E and a second negative power supply for short-distance subscriber lines with a voltage of E, Connect the negative side terminal to the ring wire (line A) of the subscriber line, and connect the negative side terminal of the second negative power supply to the tip line (line B) of the subscriber line.
A telephone power supply system characterized by connecting to a telephone and supplying telephone current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61264287A JPS63117550A (en) | 1986-11-05 | 1986-11-05 | Current supplying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61264287A JPS63117550A (en) | 1986-11-05 | 1986-11-05 | Current supplying system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63117550A true JPS63117550A (en) | 1988-05-21 |
Family
ID=17401068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61264287A Pending JPS63117550A (en) | 1986-11-05 | 1986-11-05 | Current supplying system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63117550A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10384379B2 (en) | 2010-09-29 | 2019-08-20 | Terumo Kabushiki Kaisha | Syringe with needle |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59114989A (en) * | 1982-12-21 | 1984-07-03 | Fujitsu Ltd | Feeding system |
-
1986
- 1986-11-05 JP JP61264287A patent/JPS63117550A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59114989A (en) * | 1982-12-21 | 1984-07-03 | Fujitsu Ltd | Feeding system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10384379B2 (en) | 2010-09-29 | 2019-08-20 | Terumo Kabushiki Kaisha | Syringe with needle |
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